diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 2150971..b31fd16 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -6,7 +6,7 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         ref: ${{ github.event.pull_request.head.ref }}
     - uses: terraform-docs/gh-actions@v1.0.0
diff --git a/.github/workflows/push-terraform-module-version.yml b/.github/workflows/push-terraform-module-version.yml
index 8076d9f..389c2d3 100644
--- a/.github/workflows/push-terraform-module-version.yml
+++ b/.github/workflows/push-terraform-module-version.yml
@@ -7,7 +7,7 @@ jobs:
   push-terraform-module-version:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ministryofjustice/cloud-platform-environments/cmd/push-terraform-module-version@main
         env:
           # see https://github.com/ministryofjustice/cloud-platform-go-get-module/
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 0b7ff20..9c697a2 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -7,7 +7,7 @@ jobs:
     name: Run Terratest Unit Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: hashicorp/setup-terraform@v2
         with:
           terraform_version: 1.2.5